网管系统2层拓朴发现l2discover nms

Goals:
The aim of L2Discover is to discover the second layer topology of a switched network.
The main goal was to implement a simple desktop application that can be used as a layer 2
ping and traceroute to map the current network topology.

Features.

As the information source of the topology the following sources have been used:

Cisco Discovery Protocol
If your equipment does not support this protocol the tool will not be able to generate the porper  map.

Spanning Tree Protocol (Rapid Spanning Tree Protocol)
This information is used to find  the redundant links.

Filtering Address Base
It is used to locate the  unmanagable devices on the network.
If situated on a port there are several MAC addresses and the port is not part of the STP or CDP topology then it is highly probable that there is an unmanaged switch or hub.